Determine the physical origin of enhanced TM-EoS variability

Determine the physical driver of the enhanced 86 GHz and 230 GHz flux variability produced by the temperature-dependent TM equation of state relative to the constant-adiabatic-index equations of state, using dedicated time-lag analyses of horizon magnetic flux, accretion rate, and thermodynamic averages.

Background

The simulations find that the temperature-dependent TM equation of state produces substantially larger flux variability than the constant-γ\gamma models at both 86 GHz and 230 GHz, consistently across the considered electron-heating prescriptions and electron distribution functions. The paper does not identify the causal mechanism behind this enhancement and indicates that resolving it would require time-dependent diagnostics correlating variability with horizon magnetic flux, accretion, and thermodynamic evolution.

References

Identifying the physical driver of this enhanced variability would require a dedicated time-lag analysis of the horizon magnetic flux, accretion rate, and thermodynamic averages, which we defer to future work.

— Impact of Equation of State on Black Hole Accretion Flows and Radiative Properties  (2609.16867 - Zhu et al., 15 Sep 2026) in Section 4, radiative properties